How to Find a Substitute Teacher or SNA in Ireland (2026)
- Irish schools find cover through WhatsApp groups, phone calls and texts, and the Sub Seeker portal. In our waitlist survey, 66% of subs and SNAs said they get booked by phone or text and 49% through WhatsApp groups.
- Every one of these channels works the same way: post a need and wait. That is why filling a single absence can take dozens of calls, and why SNAs are so often left out.
- A booking platform flips it. Schools book a known, available sub from their own trusted list in minutes. ClassCover Ireland launches in 2026, for substitute teachers and SNAs.
The short answer: When a teacher or an SNA is out, an Irish school works through whatever channels it has to hand: a WhatsApp group, a personal phone list, a quick text to a sub who has covered before, the Sub Seeker portal. Every one of them is a version of the same thing. Post a need, then wait to see who replies. That is why filling a single absence can take dozens of phone calls and still fall through. A booking platform works the other way around. The school books a known, available sub from its own trusted list, and the booking is confirmed in minutes. ClassCover Ireland, the first booking platform built for substitute teachers and SNAs, launches in 2026.
Every school knows the 7.30am scramble
A teacher rings in sick before the bell. The cover process starts from scratch, and the clock is already running.
The scale of the problem is well documented:
- 60% of Irish primary and special schools reported being unable to source a substitute teacher for an absence, according to the INTO, IPPN and CPSMA Teacher Supply Survey of 565 schools, October 2024.
- In Cork, four schools reported making up to 39 phone calls or emails to fill a single substitute absence (INTO Cork data, 2024).
- 19% of principals made more than 10 separate attempts across calls, emails and portals to secure urgent cover (same survey).
The subs themselves exist. They covered more than a million school days across Irish primary and post-primary classrooms in 2024/25. The shortage is real, but a large, available pool is also out there every morning. The problem is the system that connects the two. For the full picture, see our piece on the statistics behind the crisis.
Hundreds of substitute teachers and SNAs have already signed up to the ClassCover Ireland waitlist. We asked them how they currently get work. Two-thirds (66%) said phone calls and texts from schools, and nearly half (49%) said WhatsApp groups. A quarter (25%) used Sub Seeker or a similar portal. They could pick more than one, because most are juggling several at once.
Here is how each channel works, where it breaks, and what a booking platform does differently.
WhatsApp groups
Nearly half the subs and SNAs we surveyed find work through WhatsApp. It is fast and familiar, and for years it was the best tool to hand.
It was also built for personal messaging, not for staffing a classroom. A standard group caps at 1,024 members, so the Dublin substitute network has long since split across several parallel groups. A principal posts a request into one, forwards it to the next, and replies to everyone who answered to say the slot is gone. Phone numbers sit exposed to a thousand strangers, profiles are unverified, availability is unknown, and the booking lives nowhere once it is done.
There is also a data protection question every board of management should be asking. We cover the hidden costs and the GDPR angle in full in 9 hidden costs of booking substitute teachers through WhatsApp.
Phone calls and texts
This is the most common channel of all. Two-thirds of the subs and SNAs we surveyed get booked by a direct call or text from a school.
When the relationship is already there, a call is the fastest cover going. The sub knows the school, and a yes is a yes. The trusted list is the single most valuable asset a school has for cover, and nothing here argues with that.
The trouble is where the list lives. It sits in one person's phone and one person's memory. Calls go out one at a time, in sequence, while the morning ticks on. When the secretary or principal who built the list moves school, it walks out the door with them. And it rarely stretches to SNAs. The 39-call mornings start here, when the first few names do not pick up and there is no system underneath to widen the search.
Sub Seeker
Sub Seeker, facilitated through EducationPosts.ie, is the free official option for sourcing registered substitute teachers. Schools search for Teaching Council–registered teachers and send offers, which teachers accept or decline. It is a genuinely useful part of the mix, and a quarter of the subs we surveyed use it.
Two things are worth knowing about its scope. It lists registered teachers, so SNA cover sits outside it. And it runs as a web portal rather than a booking app on a phone. For many schools it works alongside the calls and the group chats rather than replacing them.
ASTI scheme, direct recruitment and agencies
A few more channels fill out the picture. The ASTI substitute placement scheme runs for member secondary schools and suits longer placements more than same-day cover. Schools also recruit directly through initial teacher education colleges, retired teachers and word of mouth. Agencies exist, but they are a minor presence in Ireland: just 1.6% of the subs we surveyed came through one.
The gap nobody built for: SNA cover
Look back over those channels and one group keeps falling through. SNAs are not on Sub Seeker. They rarely have organised groups of their own. They fall back almost entirely on the school secretary's phone.
That gap lands hardest where it hurts most. Special schools and DEIS schools have the highest documented vacancy rates and the highest reliance on SNAs at the same time. When there is no SNA to call, 59% of schools redeployed Special Education Teachers to cover absences in 2024, and the children who need that support most lose it for the day. If you are weighing up the role itself, our guide to the SNA career in Ireland goes deeper.
The common thread, and the fix
Line up every channel above and they share one shape. The school puts out a need and waits to see who comes back. That is posting. It is why cover is a scramble, and why the school has so little say over who actually walks into the room.
A booking platform inverts it. The school keeps its own list of trusted substitute teachers and SNAs, and books from it. A request goes to chosen subs in priority order, the first available accepts, and if the priority list cannot fill it the platform widens automatically to the rest of the school's network. Most bookings on this model are confirmed in under three minutes. We unpack the category difference in full in booking platform vs jobs board.
"The Irish substitute pool exists. What's missing is the system that gets the right available person in front of the school in time. That is what a booking platform does."
— Billie Muchmore, Head of Marketing, ClassCover Ireland
| At 7.30am | The current channels | A booking platform |
|---|---|---|
| Getting cover | Broadcast to a group or ring around, then wait | Book a known, available sub from your own list with one tap |
| Who you reach | Whoever happens to see it or pick up | Trusted subs first, in your priority order, then auto-widen |
| Availability | Unknown until you ask | Subs keep a calendar, so only the free ones are contacted |
| SNAs | A separate scramble, often missed | Same booking flow as teachers |
| The record | A buried chat thread, or nothing | Every booking logged and reportable |
| Phone numbers | Exposed to the whole group | Kept private |
What this means for principals and school secretaries
The morning gets shorter. Instead of working a phone list in sequence, the school sends one request to the subs it already trusts and gets a confirmation back, often before the briefing. SNAs sit in the same flow as teachers, so there is no separate workaround. And because every booking goes to chosen subs first, quality of cover becomes a decision the school makes, not a race the fastest stranger wins.
What this means for substitute teachers and SNAs
Subs do not chase. Subs are found. Right now nearly half of you are checking several WhatsApp groups a day and replying fast enough to catch work before it is gone. On a booking platform you set your availability once, and local schools send booking requests straight to you when you are free. You accept or decline with a tap. There is no weekly re-registration, no CV drop at the front office, no waiting by the phone. It is free for substitute teachers and SNAs, always. If you are building this kind of career, our piece on what flexible substitute teaching really looks like is a good next read.
The model is already proven
ClassCover operates the booking-platform model at scale. It is used in over 5,000 schools across Australia, around 1 in 2, with more than 500,000 bookings confirmed a year and an average confirmation time of 2 minutes 17 seconds. The same platform is being built for the Irish context: substitute teachers and SNAs, Teaching Council registration on every profile, tools to keep Garda vetting records organised with expiry reminders, and Irish school terminology and calendars.
Coming to Ireland
The subs are out there. The shortage is real, but so is the pool that schools cannot reach with the tools they have. ClassCover Ireland is the booking platform built for the moment a cover request goes out before the bell.
Schools can apply for the pilot programme, and substitute teachers and SNAs can join the waitlist now at classcoverapp.ie. The platform launches in 2026.
Don't post and wait. Book and be done.
Further reading
For broader Irish education policy and regulatory context: Department of Education and Youth (gov.ie), Teaching Council of Ireland, Irish National Teachers' Organisation, Teachers' Union of Ireland, National Vetting Bureau (Garda vetting).
Frequently Asked Questions
Most schools use several channels at once: WhatsApp groups, direct phone calls and texts to known subs, and the Sub Seeker portal for registered teachers. In a ClassCover Ireland waitlist survey, 66% of subs and SNAs said they get booked by phone or text and 49% through WhatsApp groups. The common limitation is that each channel asks the school to post a need and wait for a reply.
A direct call to a trusted sub is fastest when the relationship already exists, which is why two-thirds of subs say they are booked by phone or text. The limitation is that the list lives in one person's phone and calls go out one at a time. A booking platform sends one request to your trusted subs in priority order and confirms in minutes, with automatic widening if the first choices cannot take it.
No. Sub Seeker lists Teaching Council-registered teachers, so SNA cover sits outside it. SNA cover currently relies on direct phone contact and school secretary networks. ClassCover, launching in Ireland in 2026, books substitute teachers and SNAs on the same workflow.
WhatsApp is widely used but was built for personal messaging, not staffing. It exposes phone numbers, carries no verified profiles or availability, and leaves no booking record, which raises data protection questions for a board of management. Each school should consult its Data Protection Officer.
ClassCover is launching in Ireland in 2026 as a mobile booking platform for both substitute teachers and SNAs. Schools can apply for the pilot and subs and SNAs can join the waitlist at classcoverapp.ie.
WhatsApp groups and portals are post-and-wait: the school broadcasts a need and hopes someone available replies. A booking platform is book-and-confirm: the school books a known, available sub from its own trusted list with one tap, in priority order, with a documented record. Most ClassCover bookings in Australia are confirmed in under three minutes.
